TemperateReefBase Geonetwork Catalogue
Subantarctic zone oceanography - SAZ Project 1997-1998 - Sediment Trap Data
Oceanographic processes in the subantarctic region contribute crucially to the physical and biogeochemical aspects of the global climate system. To explore and quantify these contributions, the Antarctic Cooperative Research Centre (CRC) organised the SAZ Project, a multidisciplinary, multiship investigation carried out south of Australia in the austral summer of 1997-1998.
Taken from the abstracts of the referenced papers:
The SAZ project organised by the Antarctic CRC has a continuing program of moored sinking particle trap studies in the Aub-Antarctic and Polar Frontal zones southwest of Tasmania along 140 degrees E. The first deployment obtained weekly or higher resolution samples through the austral summer from September 1997 through February 1998 at three locations: the central Sub-Antarctic Zone (47 degrees S, traps at 1000, 2000 and 3800 m depth), the Sub-Antarctic Front (51 degrees S, 1 trap at 3300 m) and above the Southeast Indian Ridge in the Polar Frontal Zone (54 degrees S, 2 traps at 800 and 1500 m). The particles were analysed for total mass, inorganic carbon, total carbon, nitrogen, silicon, and aluminium. Hence values for organic carbon, biogenic silica, and lithogenics were obtained, and the mass fluxes calculated. This report details the sites, moorings, data from the current meters and sediment traps, and results of analyses performed on the collected sediment trap material.
Sediment trap moorings were deployed from September 21, 1997 through February 21, 1998 at three locations south of Australia along 140 degrees E: at -47 degrees S in the central Subantarctic Zone (SAZ) with traps at 1060, 2050, and 3850 m depth, at-51 degrees S in the Subantarctic Front with one trap at 3080m, and at -54 degrees S in the Polar Front Zone(PFZ) with traps at 830 and 1580m. Particle fluxes were high at all the sites (18-32gm-2 yr-1 total mass and 0.5-1.4g organic carbon m-2 yr-1 at ~1000m, assuming minimal flux outside the sampled summer period). These values are similar to other Southern Ocean results and to the median estimated for the global ocean by Lampitt and Antia [1997], and emphasise that the Southern Ocean exports considerable carbon to the deep sea despite its "high-nutrient, low chlorophyll" characteristics. The SAZ site was dominated by carbonate (greater than 50% of total mass) and the PFZ site by biogenic silica (greater than 50% of total mass). Both sites exhibited high export in spring and late summer, with an intervening low flux period in December. For the 153 day collection period, particulate organic carbon export was somewhat higher in all the traps in the SAZ (range 0.57-0.84 gC m -L) than in the PFZ (range 0.31-0.53), with an intermediate value observed at the SAF (0.60). The fraction of surface organic carbon export (estimated from seasonal nutrient depletion, Lourey and Trull [2001]) reaching 1000 m was indistinguishable in the SAZ and PFZ, despite different algal communities.
Simple
Identification info
- Alternate title
- Subantarctic zone oceanography - SAZ Project 1997-1998 - Sediment Trap Data
- Date (Publication)
- 2012-01-17
- Edition
- 1
Originator
Publisher
Principal investigator
Collaborator
- Name
- CAASM Metadata
- Other citation details
- Restricted access
- Status
- Completed
Custodian
- Topic category
-
- Oceans
Extent
))
Extent
- Description
- Temporal Coverage
Temporal extent
- TimePeriod
- 1997-09-01 1998-03-31
Extent
- Description
- Vertical Extent - Depth
Vertical element
- Minimum value
- 800
- Maximum value
- 4000
- Identifier
- urn:x-ogc:def:cs:EPSG:6498
- Name
- Vertical CS. Axis: depth (D). Orientation: down. UoM: m.
- Identifier
- urn:x-ogc:def:axis:EPSG:113
- Name
- depth
- Title
- Moored sediment trap measurements of carbon export in the Subantarctic and Polar Frontal Zones of the Southern Ocean, south of Australia
- Date (Publication)
- 2001
- Citation identifier
- 106
Author
- Name
- Journal of Geophysical Research
- Issue identification
- C12
- Page
- 31,489- 31,509
- Title
- SAZ Project moored sediment traps: Results of the 1997-1998 deployments
- Date (Publication)
- 2000
- Citation identifier
- 15
Author
- Name
- Antarctic CRC Research Report
- Page
- 1-128
- NASA/GCMD Earth Science Keywords
-
- EARTH SCIENCE > OCEANS > MARINE SEDIMENTS > SEDIMENT COMPOSITION
- EARTH SCIENCE > OCEANS > MARINE SEDIMENTS > SEDIMENT TRANSPORT
- EARTH SCIENCE > OCEANS > MARINE SEDIMENTS > SEDIMENTATION
- EARTH SCIENCE > OCEANS > MARINE SEDIMENTS
- EARTH SCIENCE > OCEANS > OCEAN CIRCULATION > OCEAN CURRENTS
- EARTH SCIENCE > OCEANS > MARINE SEDIMENTS > SEDIMENT CHEMISTRY
- Keywords
-
- SAZ
- NASA/GCMD Earth Science Keywords
-
- SHIPS
- R/V AA > R/V Aurora Australis
- NASA/GCMD Earth Science Keywords
-
- AMD/AU
- CEOS
- AMD
- ACE/CRC
- NASA/GCMD Earth Science Keywords
-
- OCEAN > SOUTHERN OCEAN
- GEOGRAPHIC REGION > POLAR
Resource constraints
- Use limitation
- This metadata record is publicly available.
Resource constraints
- Access constraints
- licence
- Other constraints
- Copies of the referenced publications are available for download from the provided URL to AAD staff only. A large amount of data are available in the referenced publications.
Resource constraints
- File type
- Portable Network Graphic
- Title
- Attribution 4.0 International (CC BY 4.0)
- Website
-
https://creativecommons.org/licenses/by/4.0/legalcode
Legal code for Creative Commons by Attribution 4.0 International license
- Use constraints
- licence
- Other constraints
- This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_2256_Sediment when using these data.
- Language
- English
- Character encoding
- UTF8
Distribution Information
Distributor
Distributor
Distributor
- Fees
- free
- Units of distribution
- MB
- Transfer size
- 24.6
- Distribution format
-
- OnLine resource
-
PROJECT HOME PAGE
Public information for ASAC project 2256
- OnLine resource
-
VIEW RELATED INFORMATION
Download point for the referenced publication - AAD staff only
- OnLine resource
-
VIEW RELATED INFORMATION
Citation reference for this metadata record and dataset
Resource lineage
- Statement
- See the referenced papers for more information.
- Hierarchy level
- Dataset
- Maintenance and update frequency
- As needed
- Maintenance note
- 2012-01-18 - record created by Dave Connell. 2016-03-18 - record updated by Dave Connell - basic updates.
Metadata
- Metadata identifier
- string/ASAC_2256_Sediment
- Language
- English
- Character encoding
- UTF8
Author
Sponsor
Owner
- Title
- Parent Metadata Record
- Citation identifier
- ASAC_2256
Type of resource
- Resource scope
- Dataset
Alternative metadata reference
- Title
- gov.nasa.gsfc.gcmd
- Citation identifier
- ab3acb00-0f70-4394-9a5b-c14393e32092
Alternative metadata reference
- Title
- gov.nasa.gsfc.gcmd
- Date (Last Revision)
- 2015-11-30T04:51:40
Identifier
- Description
- metadata.extraction_date
Alternative metadata reference
- Title
- gov.nasa.gsfc.gcmd
- Citation identifier
- 8.6
- Metadata linkage
-
http://data.aad.gov.au/metadata/records/ASAC_2256_Sediment
Point of truth for the metadata record
- Date info (Creation)
- 2012-01-17T00:00:00
- Date info (Last Update)
- 2017-04-26
Metadata standard
- Title
- ISO 19115-3
- Edition
- 2014
- Other citation details
- Version 1
- Title
- DIF to ISO 19115-1 Profile
Overviews
Spatial extent
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